Improvement in banding wheel-hubs



W. CHRIS.-

BANDING WHEEL-HUBS.

Patented Feb. 8, 1876.

N. PETERS, FNOTD-LITKOGRAPHER, WASHINGTON D C UNITED ST TES 1 PATENTOFFICE.

WILLIAM OORRIS, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN BANDlNGlNHEEL-HUBSU" Specification forming part ofLetters Patent No. 173,163, dated February 8, 1876; application filedSeptember 6, 1875.

To all whom it may concern:

Be it known that I, WILLIAM (loans, of the city of Rochester, inthecounty of Monroe and State of New York, have invented a certain newand Improved Process of Applying Bands on Hubsy and I do hereby declarethat the following is a full,"clear, and exact inner periphery, fittingin acorrespondiug concave groove of the hub. This form is mosteffective, but much difficulty has been experienced in applying it ,'themethod in use being to slip it over the groove and force it into thegroove by compression around the band. It has been found that thisupsets and breaks thegrain of the iron, and in thin bands, such as it isnecessary to use,.many of the bands are cracked and filled with flaws,which are'not discovered till'the band breaks 7 in use. It is alsodiflicult to so compress the band as to make a true fit, and they arefrequently loose and present a bad appearance.- To obviate thesediffieulties I prepare and apply the bands as follows:

The hub is turned with the usual grooves, a, a. The bands are alsoformed with the usual inner surfaces, b b, to fit the grooves. The bandsare now placed in a steam-chamber and subjected to boiler heat asufficient length of time to become thoroughly heated,

in which condition they expand to considerable extent. The hub is alsoplaced in a steamchambcr, preferably of low temperature, and allowed toremaiubut a short time, just sufficient to allow the outer surface ofthe hub to become softened, but not long enough to appreciably expandthe wood, as would be the case if thoroughly soaked.- This softens theshoulder 0, over which the band must slip, so that the same will yieldsufiiciently tov allow the heated band to pass. I When the band is inplace it is allowed to cool gradually, and

The inner periphery of the bandis made threethirteen ths of an inchsmaller than the smallest diameter of the groove, so as to compress withgreat force upon the hub when it shrinks and by my process, as abovedescribed, I found no difficulty in slipping the band over the hub,notwithstanding the considerable difi'erence in size. I have found byexperi: meut that fire heat will not answer for heating. the band, notonly for the reason that it injures the grain of the iron. in the thinband used, but for the further reason that it burns the groove deeper inthe wood, thereby pre-; venting a close fit, and also throwing the bandout of round. v

By the process above described I am enabled to apply bands to hubs in anexpeditions and perfect m'anner, and avoid the dimculties that haveheretofore been experienced.

Ido not claim, broadly, a band with a convex interior, fitting in acorresponding groove of the hub; but 5 I claimv The processor methodherein described of securing bands on hubs, consisting in subjecting theband to steam heat at boiler temperature, and applying the same over thehub steamed sufficiently to soften the surface without expanding it, asherein specified.

In witnesswhereof I have hereunto signed my name in the presence of twosubscribing witnesses. w WILLIAM OORRIS.

Y Witnesses: t

R. F. OSGOOD, 1 E. B. Seorr.

